Not a silly question. You can post a link to patterns and videos, sure. What isn't OK is copying a pattern and posting the entire thing or even sometimes a large part of it. A few lines from a pattern to give context if the pattern isn't available at all online (like in an old book) or it's a paid pattern and maybe nobody else has it are good too. If too much is posted one of the helpful, friendly mods will ask you to edit the post. I suppose if needed the mods could do it themselves.